Traction gang-plow.



B. R. HOISINGrTONl TEAOTION GANG PLOW. APPLIOATION FILED ulm?. 1909. y

patented Mar. s, 1910.l

. 1 0 SHEETS-SHEET 1.

Ln v v l l B. '11. HOISINGTON. TRAGTION GANG PLOW. APPLICATION FILEDJAN. 27,1909.

Patented Mar. 8, 1910.

`10 SHEETS-SHEET 2.

B R. HOISINGTON. ,i TRAGTIUN GANG PLOW. APPLICATION FILED 1111.27. 1909.

PatentedA Mar. 8, 1910.

10 SHEETS-'SHEET 4.

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B.r R. HOISNGTON. TRAGTION GANG PLOW. `.PPLJOATION FILED 11111.27, 1909.

Ptented Mar. 8, 1910.

10 SHEETB-SHET 5.

B. R. HOISINGTON. TRAGTION GANG PLOW. APPLICATION FILED JAN. 27. 1909.

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m mw w NE B. R. HoIsINGToN.

TRAGTION GANG PLOW.

APPLIOATION FILED JAN.27, 1909.

Patented Mar. 8,y 1910.

10 SHEETS-SHEET 7.

. WAM/W Patented Mar. 8, 1910.

10 SHEETS-SHEET 8.

B. R. HOISINGTON.

TRAGTION GANG PLOW.

vAP1 L10AT10N FILED 11111.27. 1909.

Patented Mai. 8, 1910.

B. R. HOSINGTO-N. TRACTION GANG PLOW.

APPLICATION FILED Imm?. 1909.

Patented Mar. 8, 1910.

10 SHEETS-SHEET 10.

- BENJAMIN n. nomineren, or MINNEAPoLIs, MINNESOTA.

TRACTION GANG-PLOW.

Specification of Letters Patent.

Application tiled January 27, 1909. Serial No. 474,417.

To all whom it may concern:

Be it known that l, BENJAMIN l?. Hois- INGToN, a citizen of the UnitedStates, residing at Minneapolis, in the county of `.Hennepin and Stateof Minnesota, have invented certain new and useful Improvements inTraction Gang-Flows; and l do,

hereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enableothers skilled in the art to whichit appertains to make and use the same.

My invention relates to traction gang plows, and has for its especialobject to provide a plowing rig of very largecapacity, and wherein alarge number of plows may be easily and quickly manipulated. v

Generally stated, the invention has for its object to increase theeilic'iency ofthese traction gang plows.

The invention consists of the novel devices and combinations of deviceshereinafter described and defined in the claims.

The tractive or driving force may be supplied either by a steam engineor by an eX- plosive engine.

As one 0f the important features of the invention, l provide steam orair actuated rotary or oscillatory motors for independently rai-sing thevplows from 'operative into inoperative positions, and in connectiontherewith, I provide valve mechanism of novel construction forcontrolling these motors.

@ther features of the invention are di'- rected to the improvement ofthetruck mechanism, and. particularly to improved steering mechanism, ormeans for controlling horizontal oscillatory movements of certain oftheA truck wheels.

The invention also involves various other novelfeatures of constructionwhich will hereinafter appear, and will be defined in 2 the claims.

ln the accompanying diawings which illustrate the invention, likecharacters indicate like parts tl'iroughout the several views.

Referring to the. drawings: Figures 1 and la are supplemental planviews, showing the complete traction gang plow, with some parts brokenaway and with soule parts removedfrom Fig. 1; Figs. 2 and 2a aresupplemental views in side elevation, showing the traction gang plow,some parts being Y sectioned, some parts being broken away,

and some parts being shown in diagram Patented liar. S, 19510.

only on Fig. 2; 3 is a view chieiiy in plan, but with some partssectioned and some parts broken away, showing the lower portion of theframe, the truck wheels and wheel steering devices of the mechanismshown in Figs. 11i-and 2a, the plows and the lifting motors and theirconnections being removed; Fig. 4C is a left side elevation, with someparts sectioned and some parts broken away, showing the intermediateportion of the track mechanism, and showingI also the several plowlifting motors; Fig. 5. is a plan view with some parts sectioned. andsome parts broken away, showing one of the so called supplemental drawbars and knuckle joint connection between the sameand the coperatingplow beam; Fig. 6 is a vertical section taken approximately on the line:v9 of Fig. 5; Fig. 7 is a front elevation of the parts shown in Fig.6', some parts being sectioned; Fig. 8 is a transverse vertical sectiontaken on the line :v8 ma of Fig. 5; Fig. 9 is a plan view with someparts broken away, showing the main and supplemental sections of one ofthe plow drag- 13 is' a detail in horizontal section on the, line ai ofFig. 12, some parts being removed; Fig. 1l is a detail view partly insideelevation and partly in verticalsection, showing means fordetachably connecting the plow beams to their respective lifting cables;Fig. 15 is an end elevation of the parts shown in Fig. 14, some partsbeing sectioned on the line ai m15 of said Fig. 14; Fig. 1G is a viewpartly in plan and partly in horizontal' section, showing one of thepair of universal coupling links used to connect the rear end of theengine truck frame to the front end of the plow truck frame; Fig. 1T isa view partly in plan and partly in horizontal section, `showing Itwo ofthe oscillatory plow lifting motors; Fig. 18 is a vertical section takenon the line e218 m18 of Fig. 1T; Fig. 19 is a vertical section takenapproximately on the line. :1219 m1 of Fig. 1,

4naled.

- are relieved from this pulling' strain.

thereto, and to the. upper side portions ot' the showingin detail, theconstruction ol': the motor controlling valve; Fig. 2O is a planv Viewof the lever mechanism for the so called motor controlling' valve; andFit; 21 is a horizontal section taken approximately on the line .ft-2.f1/ of Fig. 19.

ln thel drawings, l have shown a, steam engine for sutiplying the motivepower. This engine is of tbe locomotive type and involves a boiler 1 having the customary lire box 2, to the sides of which are rigidly securedheavy east brackets 3, havingl trunnions '1 upon which the tractionwheels 5 are. jour- 'l`he driving gear 'for transmitting motion fromengine proper to the trac- .tion wheels, is not shown, but maybe otthecustomary construction. The enginey vtruck frame is shown as secured toand stut'lmrted 'from the tire box 2 and embraces the wheels 5l ).t' theparts thereof. it is only necessary 1 to note the transverse t'ront beamthinner draw bars T and outer draw bars 8. btaid beam (3 is preferablymade `t'rom a heavy piece ot' channel iron, to the. rearwardly turnedend otl which. the t'ronty ends ol? the .outer bars 8 are bolted orotherwise rigidly Just back otl the wheels 5, a heavy transverselyextended rod tt is 'passed through the rear ends olf the draw bars 'tand 8, and as shown, alsothroneh the rear ends of the heavy metal strapslt) secured to the sides ot' the lire box, as best shown in Figs. 1 and'2. vThis frame construction secured.

front end of the tire box, aml is transmitted to the rod t) both insideand outside ot. th'e. wheels, and the wheel axles-1lare. imlepetulent ofthis trame aml the outer ends thereof tn Fig. l, the front axle of theengine truck is diagrannnatically illustrated and is indicated by thenumeral ll. 'l`his axle is ol the usual construetionhis mounted vt'orhorizontal pivotal movement, and by the usual steering connections, notshown., will steer the engine in its traveling n'rovement. 'lhe engineplatt'orm 1Q. which .is at the rear of t'he tire box. is suitablysupported b v the rod t) and by oblique base rods 1.3 conntafted tirebox.

The fratrie of the plow truck in plan view is4 approximately triangular,and the plows arefarranged on an oblique line in respect i to thedirectioi'i of travel. Fm'thermore. this triangular "t'ran'tc is'supported by three Wheels, all ot which are connected for horizontaloscillatory movements for steering purposes. .l)ire.ctin;l attentionl'mrtienlarly to lfi'gs. 1, 2, 3 and Ll, it will be noted, that the saidtriangular eonstrtuztion is made up I is theretore, such that the pull1s trom the t l of trussed upper and lower vmetal frames 14 and 15rigidly connected by tie posts or t members lt). The wide port ion ot'this truck t frame tls-t5 is` located in the tront, and is t supportedby a pair of truck wheels 17, thatare journaled in horizontally disposedannular frames 18. These annular frames 1.8 are capable of horizontaloscillatory movements, and cooperate. with' overlying annular bearingstt) rigidly secured to the` upper section vtl of thc said truck trarne.

posed betweeii the annular bearing' 1'neml. ers tti-and l). Suitablemeans. not shown, will. ot course. be ruovided for preventing`separation of said members 1S and ttt. Seg-- mental spur gears ll shownin ltip'. 3, are secured to the peripheries olf the relatively movablebearitr;v members 1S and mesh with an internudiate spur gear Q2. Thisgear 22 is secured to a sheavcior drum 2?, which in flut-n, is mountedin suitable bearings on thtl t'ramc sections tl and 1:3.

'l`he rearwardly extended and veoutrt'nzted portion ot' the truck t'ramel-l-li is supported by a single wheel 24, preferablyv provided with aperipheral ila-.ige '225, which prevents lateral slipping thereof onthe. ground. This wheel le has a laterally oll set tmb that is rigidlysecured to au axle 2o. seel |utrticularly Fia'. l2. 'l'his axle 2li isliournaled in 4the lower end portions of an approximatelyU-sliaptul.'wl1\eel bracket 27, that is provided with upper and lowertrunuions 25 and 2t), which truinnon'sare axially alincd with each otheron a line that vertically intersects the axis ot said shalft at the.transverse. center' of said `wheel. The upper trunniou its is journalcdin an arch bearing ln'tufltetit) that is rigidly secured to bars ot the.upper trame section lil. The -lower lrunnion Qt) is journaled in abearing'l that is rigidly secured to bars ot'the lower frame section 15.'l'he prongs ol' thc wheel bracket 2T, see Figs. It and tit, are shownas provided with perforated lugs 132, to which the rear ends ofcoupling' rods iiiare pivotally connected. 'l`hel'ront :t3 aretiivotallyconnected to the end of a lever la that is intermediately pivotcd tobearings a?) 'secured .\lso saidlever :ll is provided with a centrallylocated forwardly projecting arm t.

upon which a sliding` head 3T issccured b v means of a set'I screw 38,orother suitable device.. The head 25T is connected to one end ot' a rod21.15), the other end of which is eonnectetl to the arm lt) of a leverl-l, whieh latteris intermediatelv pivoted to bearings 'l2 on the framellt5. 'The opposite ends ol' the lever 4l are connected b v rods -Lliito the gear on oppositesides ol its axis.

.liv the steeringr connections just described. it is evident, thatJoscillatory movements of the gear and sheave 23 will impart simultaneousoscillatory movements in thel same direction to the. two wheels li' and.to the third wheel Q4. By adjustments of the head 557 on the lever arm3G, the'wheel 24 may be Ball bearings 2t), see Fig. 1l, are preferablyinterends ot vthese rods to the frame *let- 1:1 l

llt)

set parallel to the wheels 19, or it may set atv a slight angle theretoso that it'will 4crowd either toward or from the land side of themachine, and thereby adapt the machine to work in either direction on aside hill.

The above required oscillatory movements of the gear 22 and sheave areIneterably imparted trom the front axle l1 of the engine truck, and asshown. this is accomplislied by a cable 44 wound on and secured rockingmovements so as to adapt themselves-to irregularities in th(` surface otthe 4Qround. These coupling links' as pre terably constructed, compriseforked membersl li', and 4G, the latter oi which have stems 4T swiveledin the former and secured thereto by nuts '-18 or other suitable means.The prongr ends oi" the link membersl are pivoted on the. transverse rodt) ot the en :iine truck frame. while the prong ends ot the link membersLIt are pivotallv connected b pins 49 to the. lugs of bearing plates 5owhich latter are rigidly secured to both sei# tions M and l5 ot theplow' truck trame.

Water to supply the `boiler is preterahli' carried by a pair ot tanks5l. .see rigs'. l and 4, which are mounted on the traine ot -the plowtruck abovr` the wheels 1T and have eoncaved bottoms that clear saidwheel.

The-plowA connections to the trame ot the plow truck are bestilluetrated in Figs. l,

. 2a. and Figs. to ll inclusive. The-c plowhl 32, which as alreadystated. are located on an oblique line to the line ot' dra ttl and thedirection of travel, are rigidly secured to the rear ends ot plow beams523. These plow bean'is. at their t'ront ends, have rigidly securedtorked heads 5l that are lpivotallv connected by vertical pins 55 to theprongs of verticallyY extended clevises 5o. lCaeh elevis 56 isinterlanped with and pivotallv Qonneeted at'. 5T. to a horizontallyextended clevis 58. Short nutted bolt.-K Si rigidly secure thecooperating` clevises .'t'iand 5S in any set adjustment. The head ot theclevi-l .7(3. being' provided with .segmental slots ttt). which nermitpivotal or swivel :ulii'iatmentf: ot said clevis 5G, and hence. ot theplow beain and plow on the horizcntal axisl o'lE the pivotal connection5T. The forwardly projectingarme ot' the clevis Titi are pivotallvii'onnected by horizontal pivot pinsl til to `the rear end portion otal.vi-lie, like upplemental section b2 ot the corre-pondin;l dra;r bar.At: its forward end. this supplemental section or yoke GQ has agaia-formed lug (t3 i tive drag` bars or bar sectionsI G2 and 65.

that tits into a seat formed between flanges Gilet the main section ofthe two part plow drag bar. A pin 66 preferably of `hard wood and whichmay be sheared underg7 'less strani than required to break the plowv oran)v part. of the drag -bar proper. is in-l serted through coincidentseats and the said lugs o?, and flangesl 34. The suppleinental barsection GQ, at itsv rear portion. is pro-j vided with forwardlyprojecting dowel pins tlf that engage seats US in the rear portion ofthe main bar section (la. and are adapted to freely pull out; ot said.seats when the sa'tet'v pin (itl is :'-iheared by 'any abnormal:

tudinally exteiuled passage titl .that alines with ythe openiim` in thevoke or supple-4 mental section o2. when the .said parts (3Q and (15 areconnected. .\t the side? ot' the opening on, the bar ti is provided withverticallv pertorated bearings TO. in which the legs'- ot a verticallyadjustable wheel axlebracket il are seated. 'lhe logs ot the. bracket 7land'i'he upper portions o'f the;

'bearings T0 have vertically spaced perforation, so that bv means otbolts or pins, the lsaid axle-bracket' may bo .set in arriv desiredverlieal adiuetment in respect to the rear portion ot the bar tif, (lagewheels 'T2 are. journaled on'the Spindle: ot the respectiveaxle-brackets Tl. and work freely in the openings onwheel passages otthe respec- The Vl'ronl ot each main drag` bar G5 is provided withlaterally spaced hinge lugs that are pivotally connected hv pins T3 tothe prongs o!" horizonlall)v dis-posed coupling;- heads 74. which inturn are intermediately connected bv vertical pivots T5 to heavy lugbracketsl To bolledor otherwise rigidly secured t0 the oblique bar l5".l lln Fig'. 3, only one oit these luV braekets Tt'fis shown aS inposition' on the .said bar 15H. n

The main drag' b'ars (i3. near their torar i enos. (see rigs. la. 2n. 9and l0) are provided with heavy upwardlvv extended lire-l TT. to whichthe t'orward end. olil SpringA bars T8 are pivotallv counerted.'a 1shown. by headed wreiw` Tft. "lhese spring; bars 78 are .-'etV edgewise.in vertical planes, and their rear ends are held againstl twisting'movementa by. but are movable enilwise through.v bearingI tt). which inturn are pivolallvv connected to hea vv lugsI or bearingis Sl riveted orolherwisey rigidly .secured to the intermediate iipwardlv bowed portionot the respective blow beam 3P). 'l`he intermediate portion-l ot thespring bar:- T work between the` laterally7 spaced up vardlv extendedprong'.-4 SQ. see Figa. 9, 5 and S, of the relspective clevises rl`hesespringl barsy 'TS tend to hold the plow beams 53 in straight alinement'with their respective drag bars tf1-(35, but permit the plows t0 befreely raised anil lowered. By inserting a pin or strain. The main bar(t3 hasl a large lonei- 80 bolt 83 through one of several perfoiationsin the guiding prongs S2, the buckling movement oin the plow connectionon the pivot pins G1 when the plow israised, maytliat, under extremeupward the plow, its'gage -wlieel 72 troni the o'round as indicated bars(i2- 05 to swing laterally, and the vertical pivots 55 pei-init theplows :t'iirthei and additional lateral. swinging iiiovenieiits.')tlierwise stated, the plows are, by the above noted pivot joints, soinoiiiited that they may turn iii the furrow to avoid orcleartlieinselves ot' obstructions without requiring the ,i entire body ofthe plow to be 'forced laterl ally and bodily to one side. Also theyperinit the plows to be bodily lorced laterally without changing theirdirection in yrespect l' to ,the line'otl travel. placed in the guideprongs plows may be n'ioved out of the g out raisingtheir gage wheels 72troni the 'llic pins S3 are so S2, that the ground; and when the plowsaie thus raised,

the lspring bars 7S hold the saine in central positions so that theplows will not swing laterally into engagement with each other, evenwhen on a side hill.

Vlien the plows are ra'ised into the extreme position shown in oneinstance in Fig.

2a, and the gage wheels 72 are raised from' tlie freund, the entireplowing rig niay be readily backed up.

rl`he connections for lifting the plows are best shown in Figs. 1a, 2,l, 14, 17 and 18. Each plow is lil'ted by a llexible connection lpreferably in the form oi a cable Sl. 'The intermediate portionsl otthese cables run over guide'sheaves 85, mounted in bearin'g brackets 80,secured to the oblique bar 11 of the upper truck trame section 111. One01"; these cables also runs over a guide shearet'( mounted on the upperportion ofI the art-lied wheel bearing bracket 30, as best shown in iFig. Ll. At their reaiends, the cables S-l-are iletaehably connected bya novel device best shown in Figs. 2", lil and 15, to the interineldiat'e portions olE lthe,respective plow beains 53. This delai-hablecoupling involves a bracket SS riveted or otherwise rigidly cured lo theplow benin. and provided with a pair ol' lugs, to one ot which a stud559 secured, and the other having a recess that receives one end ot acoiled spring` 90. y This spring` 90 normally holdsthc l'ree end ol a.retaining arni 91 against the end oi the stud S9, the other end el: saidstud being pivotally connected to said bracket "he respective cable 81is looped at iis lower endaround the t will, ot' course, y

'round witli- I stud S9. Thebracket S8 and the cable holdplied to thelower end ofthe plow, but removed from the raised plow in Fig. 2*.lfihen the plows are connected to their drag bars, the .pull ot' thecable 8-1 is approxiinately straight upward, and approximately at aright angle tothe coupling Astud 89. Vihcn however, aplow is torn loosefrom its drap` bar by shearing of its safety pin 6G, the cable .willslide forward on the stud S9, and, engaging the free end of the lever91, will more the latter againstEthe tension o'its spring 90, therebyautomatically releasing the said cable from the disconnected plow andthus preventing the cable from being broken. f

l l l l i cable 8-1 is attached to, and adapted to be wound upon thegrooved portion 99. of` an oscillatory or rotary motor druni 93,.as bestshown in Figs. 1, 2a, 17 and 18. As already 1 stated, there is one ofthe rotary or oscillatory motors for each plow. Preferably, l each motordrinn ,93 is provided with a d ei, tacliable side or head 93a, as bestshown in Fig. 17, and these drums are mounted to rotate upon tubularshafts 91 that are keyed or otherwise rigidly secured inI suitablebearings 95 secured on the-plow truck frame seetioii 14. One end of eachtubularshaft 91 closed, and the 'other end is connected to a steam orair supply pipe 96.A Rigidly se'- K cured tojeach 'tubular shaft- 91 andclosely i fitting within the cooperating dru1n93,'i sa lvcylindrical hub97, that has ajradial port l 98 leading from the perforation in thecelil tral portion oit the said tubular pipe. The l fixed hub 97 has aradially projecting blade like abutment 99 that closely fits the sides land internal cylindrical surface of the drum The said drinn 93 has apropelling blade 100that closely engages thecylindrieal surtaee ot' thenon-rotary hub .97. Also the drinn 93 is formed with a peripheral locklug 101. and a peripheral escape passage 102.

lVhcu the Aplow is raised to its highest position, shown in Fig.i-,orifespoiidiiig motor is engagei'l and held by a lock dog 1023, thatis pivotally connected A bell to the corresponding bearing 95.

is connected b v a rod 105 to a projecting aiin ot the correspondii'iglock dog 103, and a eoii'ipression spring on said rod yieldl ing'lyholdsl the said loch dog in an operative l po-iiti'oi'i. rlhfe low'eraini ofthe bell crank 10i is connected by rarod 107 to the lower cnil ofa lever 10S, which as shown,y is interniediatelv pivoted to a tearingT109l on the upper 'frame section 1l'. as best shown `in Fig. 4. Theupper ends ot' the levers 108 i are connected by rods 11.0 to ha'ndleii'ers 111,

which at their lower ents, ,are'nivotallyconinected at 112 to suitablebearings on the At their forward ends, each plow liftingv 2, the lug 101of the l l crank 10.1 pivoted to the saine bearing 95,v

ing device above described are shown as aplll) the two controllingvalves 124 and 134 be then moved together, and the port 125 be broughtinto registration with any one of the several ports 117, live steam willbe admitt"l into the drutn of the corresponding plowklilting motor, andthe steam confined between the two blades 99 and 100 will rotate thedrum in the proper direction to wind up the corrcsl'ionding cable 84,and li'tt the counected plow. The plow nmy be raised slightly above theground and again dropped entirely by the control ot the supply ol' steamtto the drum 9?, but to drop the plow, requires the secondary valve 134to be so moved that its support: 141-0 will register with thedistributing port 125, while the latter is still in communication withthe said port '117.

To lit't. the plow vinto the, upper position shown in Fig. Q, requiresthe drum 93 to be rotatedias far as shown by full lines in ltig.

,1.8, and in this posit-ion, the corresponding lock dog 103 will engagewith the lug tttt and lock the said drum against backward rotation andconsequently, positively hold the plow in the said raised positionindicated. li." the steam be lett turned on too long. the' drum will berotated until the es. cape passage 102 passes the .stationary blade 99,whercui'ion the live steam will escape through said passage andthercl'iy prevent the drum blade 100 from being forced against the saidfixed blade 0S).

lVheu the drums Si?, are locked by the lock dogs 103, and the plow is tobe loweredritis, of course, necessary, first to move the said lock doginto its releasing position. This..

as before stated. may be accomplished by indepemflent manipulations oithe individual levers 111. so thaty the said plows may be successivelyor otherwise independently lowered; or by movement of the master lever115, all of the plows may be simultaneously released and dropped intoworking positions.

To cushion the cxtreme movements of the drums 93 and hence, the downwardmovement of the plows, cushioning devices or butlers are provided. Thesecushioning devices areI preferably constructed as shown in Fig. 18,wherein the numeral 145 indicates a cylinder orI dash pot rigidlysecured to the corresponding bearing 95, and the numeral 146 indicates apiston spring pressed within the said cylinder, with its stemprojectingr in position to be engaged by the lever 101 when the saiddrum 93 is rotated to the position indicated by dotted lines on-Fig. 18.

What- I claim is:

1. The 'combination with a truck and a multiplicity of plows, eachhaving its own individual connection to said truck, 'a series ofindependently operative tluid actuated motors connected each to one ofsaid plows for lifting the' same, and a common cont t l I said motorsinto action in succession troller for said motors operative to throw inthe desired order.

Q. The combination with a truck and a multiplicity of plows connectedthereto, of fluid actuated motorsprovided with wind lass drums, cableconnections between said drums and plows, lock devices operative on saiddrums tor holding said plows raised. a series of levers with connectionsl'or independently releasing said lot-l; devices. and a common leveroperative on said loclodevices through said series of imlcpeiulentlevers for simnltaneously( releasing said loci; devices. l

3. The coml'iination with a truck and a multiplicity o't plows connectedthereto, of motors nith connections tor liftingl said plows. and acommon t'outroller for said motors operative to throw said motors intoaction successively, in any desired order.

4. 'l`he combination with a. truck and a multiplicity of plowsconnectedthereto, oi' lluid actuated motors with connectionsfor lifting saidplon's, and a common controller valve mechanism for said motorsct'nnprising a primary and a secondary valve, arranged to be set. sothat common movement thereot -in a constantv direction, will throw saidmotors successively into action, and varranged to be set inanotherposition, so that common movements thereof will hohl all the saidmotors inoperative.

5. rlhe combination with a 'truck and a multiplicity ot plows connectedthereto, ot rotary Huid actuated motors having windlass drums, cablesconnecting said drums to said plows, and a common controller valvemechanism -tor said motors comprising primary and secondary valves, anddevices for Aindicating the posit iou of said primary valve andsecondary valve.

t3. The combination with a truck and a multiplicity ot plows connectedthereto, of fluid actuated motors with connections for lifting saidplows, said motors having escape passages tor limiting theextrememovements ot` the movable members thereof.

7. The con'iliination with a truck and a multiplicityot plows connectedthereto, of rotary tiuid actuated motors with connections for liftingthe said plows, lock devices for securing said plows in raisedpositions`r means for releasing said lock devices. and buffers forlimiting the extreme movements of the movable members of said motor.

8. The combination with a truck and a multiplicity oli plows connectedthereto, of

rotary motors with connections for lifting Isaid plows, the movablemembers of which motors have lock shoulders, lock dogsl operative onsaid shoulders to lock said plows in raised positions, and buttersoperative on said lock shoulders to cushion the eX- ,.252,movements otthe plows,said connections inam., rc1

vvtreme movements of the movable members supporting the rear portions ofsaid drag of said motors. Q Tyhe combination with a truek, of dragbarspivotally connected to the truck frame iforlateral swingingmovements, plows havi i Lingtheir beams connected to said drag barsI forlateral swinging movements` and yield- Qingmeans tendingto hold saiddrag bars valined with their respective plow beams. tofl0. Thecombination with a truck,old1ag i fbars vconnected to the truck trame,plows havingl their beams connected to said drag .'.Qbars for .lateralswinging movements, and ,yielding means tending` to hold said plow beamslaterallyv alinedjwith said drag bars. i l1. ln a gang plowfthecombination with truck and plows connected thereto with freedom t'orlaterall swinging movenicnts, of

l laterally acting yielding -mcans tending to said plows in intermediatepositions. y`The combination `with a truck and a ,gnatltiplicitv otIplows, o't drag bar connections between tht` truck frame and plow @beams,permitting lateral and swinging luiling. vertically extended guides,and .,.'pring bars connected to the plow beam and ti.i, the.fdrag barconnections.y and workingl .insaid guides. amt )f'icldingly holding thc3o plow bea-ms alined with said drag bar cony nec-tions. y

The combination with a truck and a multiplicity ot plows. of drag barconnections between the truck trame and plow so beams, said connectionshaving vertically extended guides. and spring bars attached to said plowbeam and drag connections, workingin said guides, vieldingly holding theplow beams laterally alined with the trag 4o bar cminections` andserving to limit the downward buckling movements of said plow beams anddrag bar connections.

let. The combination with a truck, of yoke like drag bar connectionsconnected to the yt5 truck trame and provided with gage wheels locatedin the openings of the respective guide bars. and plows connected tosaid drag bars at the rear ot' said gage wheels.

l5. The combination with a truck and a n'iultiplicity otl plows, of dragbars connecting the plow beams to the truck trame, and comprising mainand supplemental sections, both of which are yoke shaped, and thelatterof which is detachable trom tbe former, and gage wheels connected to theprimary sections ot' said drag` bars in the openings thereotl and ofsaid supliilemental sections. whereby 'said supplemental drag bar seetions when torn loose. will pass over said gage wheels.

16. The combination with a truck and a multiplicity ot' plows, of drag`bars pivotalty i connected to the truck frame and to the plow beams, andgage wheels connected to, and

bars, and vertically adjustable in respect thereto to vaiv the depth ofthe furrow;

1T. lhc combination with a truck and a multiplicity ol plows, ot' yokelike main and su pplemental drag bars connected by a safety device andpivotally connecting the plow beams to the truck trame, axle bracketsadjustably connected to the rear end portions ot the main drag bars, andgage wheels journalod on said axle brackets and working in the openingsot the cooperating mainI and supplemental drag bars.

t8. A plow drag bar made up of main and supplemental sections, connectedby a safety l pm, and one ot the parts having tongltudi nally extendeddowel pins loosely/seated in the other part'.

10. The combination with a truck and a multiplicity ot plows, of dragbars connecting the plow beams to the truck trame and made up ol primaryand supplemental scetions, connected by a safety pin, and one of saidsections having longitudinally extended dowel pins engageablc with seatsin the other section.

20. The combination with a truck and a multiplicity ot plows, ot dragbars proper, connected atV their lorward ends to the truck trame, and apair ot' cleviscs tor each drag bar rigidly but adjustably connected toeach other t'or swivel movements, a nd one thereof being pivotallyconnected to the cooperating drag bar, and the other being pivotallyconnected to the cooperating plow beam.

21. The combinationwith a truck and a multiplicity of plows` of dragbars proper pivotally connected at their forward ends to the tracktrame, gage wheels supporting the rear ends ot' said drag` bars, and apair -of interlapped clevises t'or each drag bar rig idly but adjustablyconnected together :tor swivel movements, one of said clevises beingpivotally connected to the cooperating drag bar, and-the other beingpivotally connected to the coperating plow beam.

2;.. The combination with an engine truck trame anda plow truck frame,of a pair of links connected to the two truck trames by horizontalpivots, each link being made up of a pair oftelescoped members capableof swivel movements, permitting independent transverse rocking andvertical movements of the two truck frames.

23. A truck frame supported by two transversely opposite Yt'ront wheelsand a rear wheel, and connections for imparting simultaneous oscillatorysteering movements to said wheels, and including means t'or varyingtheangle ot' said rear wheel in respect to said front wheel.-

lThe combination with a truck frame and wheels for supporting the saine,of horil on said frame in frontvof the rear wheel and other two arms ofsaid secondv lever to an movements, a three armed levervniounted havingtwo ot'- its arms connected to said rear Wheel'axleon the opposite sideof said i Wheel, a, rod adj ustably connected to the third arm Aof saidlever, a second three armed L leverf mounted on said frame, and to one'arm ofwliich theother end et' said rod is connected, and a pair of rodsconnecting the intermediate gear of the lgear connection between saidiront lwheels.

26. The combination with a truck and ploW connected thereto by adisrnptible r bar connection, of a plow lifting device ar- 1 l t i llranged to be automatically released when said drag bar connection isseparated. l

27. The combination with a track, oit a multiplicity of plows anddisiuptible dra.;N bar connections between the plow beams and truckframe, of plow lifting devieeff` coinprising lifting cables andcouplings between said cables and plow beams, which couplings 3automatically release said cables when the l ltrai'ne h y verticallytruck wheel having an oil'set hab Joiirnaled i to both oi? thedei'iendinp; portions ot said.

said drag bar connections are separated and the pions drop to the rear.

2S. The eoinliination with a truck and a a inultiil'ilicity et' plows;connected thereto by 'disrnptible drap; bar (-cinntct'ions, ol; coup- 1and ,in'oril l with sind like projections;7 spring' pi.e:-isrf i locklevers normally held against the ende oi' said stud .like projections,motors for lii'tinfv id plows` and lifting-r connectiona `trein `idinotoi's lo .said plows, including cables having' loops oni-ings,normally held on the sind lil-ie projections oi` said coupling;brackets, but adapted to press the '-opcratinpj sprint;` held levers outof position, and thereby antoniatically release Said cables when Saiddrai'l bar connections are Separated.

29. rlhe combination with a truck traine and an arched bearin; j bracketsecured thereto, otra yoke like wheel hearing connected to said archedbearing and to Said truck aiined pivots, and a ling` bracket fseciiredto the l'il'ow beanie yoke like wheel tieni-ing, with its taijieversecenter located in the vertical plane oit the iixotal coni'iectioi'ieI ofsaid wheel bearino'.

Vln testimony whereof l ailix. my signature in presence ot' twowitnesses.

BENJAMN R. HOlSl NGTON Witnesses:

Amon Swanson, Hanni* D. KiLGoiaf..

